**ALL ROUND PICTURES FROM SOLARPIX.COM**.**WORLDWIDE SYNDICATION RIGHTS**.Rebecca Adlington, Olympic gold medal-winning swimmer is joined by Mayor of London, Boris Johnson to launch a four-week mobile swimming pool on the South Bank of the River Thames in London, which is free to use by members of the public. London, UK. 4 August 2009..This pic: Boris Johnson..JOB REF: 9680 LNJ DATE: 04_08_2009.**MUST CREDIT SOLARPIX.COM OR DOUBLE FEE WILL BE CHARGED**.**MUST NOTIFY SOLARPIX OF ONLINE USAGE**.**CALL US ON: +34 952 811 768 or LOW RATE FROM UK 0844 617 7637**